Determination of Compressed Liquid Densities for CO2 + n-Decane Using a Vibrating Tube Densimeter
Source abstract
Abstract
Understanding the density of CO2 + n-decane is crucial for designing and operating CO2 capture, transport, and storage. The safety and effectiveness of CO2 burial is directly affected by the density of CO2 + n-decane mixtures. The liquid densities of CO2(1) + n-decane(2) mixtures with mole fractions of CO2 x1 = 0, 0.2032, 0.4434, 0.7589, and 0.8947 were measured using a vibrating tube densimeter. The combined expanded uncertainties of density with a level of confidence of 0.95 are estimated to be 0.6 kg·m−3. A total of 221 compressed liquid densities of CO2(1) + n-decane(2) mixtures along the five isotherms between T = (283 and 363) K with pressures up to 100 MPa were presented. The densities of mixtures were correlated by the modified Tait equation, resulting in absolute average deviations between the experimental and calculated values of 0.028%, 0.013%, 0.017%, 0.044%, and 0.042%. In addition, the isothermal compressibility, isobaric thermal expansivity, and excess molar volume were derived from the modified Tait equation.
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Research context
OpenAlex topics: Phase Equilibria and Thermodynamics · Carbon Dioxide Capture Technologies · Advanced Chemical Sensor Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Engineering Research Center of Building Energy Efficiency Control and Evaluation, Ministry of Education, Hefei 230022, China
College of Electrical, Energy and Power Engineering, Yangzhou University, Yangzhou 225127, China
Key Laboratory of Thermo-Fluid Science and Engineering of MOE, Xi’an Jiaotong University, Xi’an 710049, China
Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
Funding
Open Project Program of Engineering Research Center of Building Energy Efficiency Control and Evaluation, Ministry of Education · Natural Science Foundation of Jiangsu Province, China · Natural Science Research of the Jiangsu Higher Education Institutions of China · CAS Key Laboratory of Cryogenics, TIPC · Key Laboratory of Thermo-Fluid Science and Engineering (Xi’an Jiaotong University), Ministry of Education, Xi’an 710049, P.R. China
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